Does your preaching sound to your hearer that if he would only quit being immoral: lying, stealing, fornicating, coveting, etc. he would be right with God? That your call to repentance is a call to quit being immoral and become moral?
Or does your preaching sound to your hearer that his sins, lying, stealing, fornicating, coveting, etc. are signs that he is dead towards God and therefore he needs to be born again to be right with God?
When Nicodemus comes to Jesus in John 3 Jesus tells him he must be born again to see the Kingdom of God and be born of water and the spirit to enter God’s Kingdom.
Jesus did not speak to Nicodemus in moral terms but He called him to be born again. Paul says we must be new creatures [2 Cor 5:17] and Peter says we are born again by the incorruptible Word of God [1 Peter 1:23].
In other words the emphasis in Scripture beginning with the Lord Jesus is that man must be born again. It is the unique message of Christianity and testifies to the reality of life and must be emphasized in your preaching. Don’t let your hearers walk away with the idea that you are preaching morality but that you are proclaiming they are dead in their sins and must be born again by the only One who can raise them from the dead: Jesus Christ the Lord.